Science adviser to President Barack Obama mentioned in his report, swine flu outbreak could kill 90,000 people in the United States.
Half of the total U.S. population is also threatened virus A (H1N1) during spring and winter of this year.
Epidemic influenza A (H1N1), "The number of infected people could rise 30 to 50 percent of the U.S. population this winter. In addition, infected showing symptoms rose from 20 to 40 percent or 60 to 120 million Americans. Of this amount, a half more have to get medical treatment, "written in a report quoted by the AFP, Tuesday
